Removable Radiation Cured Composition And Process For Protecting A Micro-Fluid Ejection Head

• US 20080312354A1
• Filed: 05/23/2007
• Published: 12/18/2008
• Est. Priority Date: 05/23/2007
• Status: Abandoned Application

• Current Assignee: Lexmark International Incorporated (Ninestar Corporation)
• Original Assignee: Lexmark International Incorporated (Ninestar Corporation)
• Inventors: Rosa, Dell T., Mansdorf, Bart Allan, Krawczyk, Karina Anne, Spivey, Paul Timothy
• Application Number:
  US11/752,334
• Publication Number:
  US 20080312354A1
• Time in Patent Office: Days
• US Class Current: 522/39
• CPC Class Codes: B41J 2/1753 Details of contacts on the cartridge, e.g. protection of contacts
• CPC Class Codes: B41J 2/17536 Protection of cartridges or parts thereof, e.g. tape
• CPC Class Codes: C08F 2/48 by ultraviolet or visible light
• CPC Class Codes: C08F 222/1065 of alcohol terminated (poly)urethanes, e.g. urethane(meth)acrylates
• CPC Class Codes: C09D 4/00 Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16

Abstract

There is disclosed a removable radiation cured member suitable for use in protecting a micro-fluid ejection head. Further, a reactant mixture suitable for sealing a micro-fluid ejection head comprising a vinyl-containing oligomer, a filler, and optionally a reactive diluent and/or a photoinitiator is disclosed.

Claims

1. A reactant mixture suitable for sealing a micro-fluid ejection head comprising:

a vinyl-containing oligomer, a filler, and optionally a reactive diluent, and/or a photoinitiator.

2. The reactant mixture of claim 1, wherein the vinyl-containing oligomer comprises a polymerizable functionality.

3. The reactant mixture of claim 2, wherein the polymerizable functionality comprises one or more of an acrylate, a methacrylate, a vinyl ether, a urethane, a siloxane, an eater, an ether, an epoxy-derived component, and an anime-containing component functionality.

4. The reactant mixture of claim 1, wherein the vinyl-containing oligomer comprises an acrylate oligomer.

5. The reactant mixture of claim 1, wherein the vinyl-containing oligomer comprises a urethane acrylate oligomer.

6. The reactant mixture of claim 1, wherein the vinyl-containing oligomer comprises a urethane diacrylate oligomer.

7. The reactant mixture of claim 1, wherein the vinyl-containing oligomer comprises about 50 wt % or more of the reactant mixture.

8. The reactant mixture of claim 1, wherein the vinyl-containing oligomer has a molecular weight of from about 1,500 to about 20,000 g/mole.

9. The reactant mixture of claim 1, wherein the vinyl-containing oligomer composes about 1 to about 6 vinyl groups per molecule.

10. The reactant mixture of claim 1, wherein the reactive diluent comprises one or more of an aliphatic urethane acrylate or a diacrylate of propoxylated neopentyl glycol.

11. The reactant mixture of claim 1, wherein the reactive diluent comprises one or more functional groups comprising a urethane, a siloxane, an ester, an ether, a metallic acrylate, a fluorine-containing component, a vinyl ether, a thiolene, an n-vinyl pyrrolidone, a styrene, a vinyl acetate, a maleic anhydride, and a maleimide.

12. The reactant mixture of claim 1, wherein the reactive diluent comprises one or more of isobornyl acrylate, 2(2-ethoxyethoxy)ethyl acrylate, 2,2,2-trifluoroethyl methacrylate, octadecyl vinyl ether, and trimethylolpropane tris(3-mercaptoproprionate).

13. The reactant mixture of claim 1, wherein the reactive diluent composes about 40 wt % or less of the reactant mixture.

14. The reactant mixture of claim 1, wherein the reactive diluent comprises about 1 to about 6 vinyl groups per molecule.

15. The reactant mixture of claim 1, wherein the reactive diluent has a molecular weight of from about 50 to about 1500 g/mol.

16. The reactant mixture of claim 1, wherein the filler comprises one or more of a hydrophobic fumed silica, a hydrophilic fumed silica, polymethyl methacrylate spherical beads, and polymethylsilsesquioxane.

17. The reactant mixture of claim 1, wherein the filler comprises one or more of a fumed silica aftertreated with a methacrylsilane, a fumed silica aftertreated with HMDS (hexamethyldisilazane), and a hydrophobic fumed silica after treated with DDS (dimethyldichlorosilane).

18. The reactant mixture of claim 1, wherein the filler comprises about 20 wt % or less of the reactant mixture.

19. Use reactant mixture of claim 1, wherein the photoinitiator comprises any suitable Norrish Type I compound, a Norrish Type II compound, or combination thereof.

20. The reactant mixture of claim 19, wherein the Norrish Type I compound comprises one or more of an alpha-hydroxy ketone, an acylphosphine, and an aminoalkylphenone.

21. The reactant mixture of claim 19, wherein the Norrish Type II compound comprises a benzophenone.

22. The reactant mixture of claim 19, wherein the photoinitator comprises a Norris Type II compound and a Norrish Type II co-initiator.

23. The reactant mixture of claim 22, wherein the Norrish Type II co-initiator comprises one or more of a primary, secondary, and ternary amine or ether.

24. The reactant mixture of claim 1, wherein the photoinitiator comprises about 10 wt % or less of the reactant mixture.

25. The reactant mixture of claim 1 wherein the viscosity of the reactant mixture ranges from about 10 cps to about 10,000,000 cps at room, temperature.

26. The reactant mixture of claim 1 wherein the viscosity of the reactant mixture ranges from about 50,000 cps to about 750,000 cps at 15 rpm.

27. The reactant mixture of claim 1, wherein the reactant mixture is substantially free of organic solvents.